Asked by Becky
Sin5x cos2x + cos5x sin2x=
Answers
Answered by
Reiny
It matches the pattern of
sin(A+B) = sinAcosB + cosAsinB
sin5x cos2x + cos5x sin2x
= sin(5x+2x)
= sin (7x)
sin(A+B) = sinAcosB + cosAsinB
sin5x cos2x + cos5x sin2x
= sin(5x+2x)
= sin (7x)
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